If you can t do that then you are in over your head with this house and it will do noting but bleed you dry paying for people to do work for you.
Big gap between counter and wall.
Unfortunately the trim kits and gap covers weren t wide enough or long enough to solve our problem.
Most are about 1 w x 30 l.
If the countertop isn t level slide shims between the countertop and the support struts of the cabinet frame to level the countertop.
An obvious gap between a countertop and backsplash is unattractive and it can allow water to seep through.
Close the gap between counter and wall if the gap between the countertop and backsplash is more than 3 8 inch it s generally too wide to fill and is best handled with trim but you can try to close the gap to give yourself the caulk option.
We needed a solution that was wider than 2 5 and longer than 30 so it could rest on the counter.
Remove the excess countertop up to the pencil line with a belt sander and a coarse 60 grit sanding belt.
Set your compass to fit the tip in the widest gap between the countertop and the wall.
When i scribe c tops to a wall the gap is always less than an eighth and usually a sixteenth if the gap opens up later then some serios movement is taking place and needs to be addressed first.
It s supposed to be behind the counters and cabinets.
If the gap cover is shorter than the depth of your stove leave a gap between the wall and the cover.
Measure the depth of your counter and cut the cover if necessary.
You ll need a drill with a no.
The fix is to remove those counters and actually fix the wall.
If there is say an inch to inch and one half overhang across the front of your slab maybe the slab could be slid back say one half inch closer to the wall closing the gap enough that when you add a backsplash you could fill in the difference with foam backer stuffed into the space between back of countertop and wall and then use flexible caulk to close the gap would depend on how thick your backsplash is as to whether this might be a viable fix.
2 phillips bit a flat pry bar wood shims and a hammer.
Many of the covers you will find will be of one uniform size.
Another suggested solution was to hire a plumber to cut the wall and recess the pipe.